题目内容：

词形变化

1.I went to visit my grandparents last weekend. I knocked on the door, but nobody        （答复）.

2.My mother tells me not to play on the road. It’s very          (danger).

3.Betty is very           (luck) to win a prize (奖品)like this.

4.We all like Li Ming very much because he listens to teacher         （care）in class.

5.Your camera is not as expensive as           (she),but it works well, too.